£2.00 each plus one lot of postage

therefore buy 3 - £6 plus £3.99 post = £9.99 which makes them £3.33 each

buy 4 £8 + £3.99 = £11.99 (less than £3 each)

buy 5 £10 + £3.99 = £13.99 ( £2.80 each)

and so on ......

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